I have made 4 offers in the last two weeks on estate sale homes, all cash, closing in 4 days, 100k earnest money, with only due diligence as a contingency.

Wouldn't it be better for a new agent with no local network to draw upon, to try to work at a new home builder where you might make less money per sale but at least you have sales and can turn customers into potential clients down the road? 

There may also be tax due if the real estate has appreciated between now the sale.

i am buying from the sheriff foreclosure sale. i am doing a title search, and i see the following ; judgement obtained by chase bank on 1/26/2018, and it was later assigned from Chase to VRTG ASSET TRUST on 9/21/18. 

You then resell it.It is the same as any for-sale-by-owner and perfectly legal.What is not legal in every state is assignment - getting a property under contract and selling the contract.But wholesaling is legal everywhere.

Not a bad plan,  its legal, but the note (current loan) may have a due on sales clause.  

Single-family home sales fell 5.8 percent year-over-year, with 6,548 units sold;Days on Market (DOM) for single-family homes was 52 days;Total property sales declined 4.4 percent, with 7,842 units sold;Total dollar volume was down 3.5 percent to $2.2 billion;The single-family home median price edged up 0.2 percent to $232,500, a September high;The single-family home average price also achieved a September record, rising 1.7 percent to $295,765;Single-family homes months of inventory was at a 4.0-months supply, up fractionally from 3.9 months last September and slightly below the national supply of 4.3 months reported by NAR;Townhome/condominium sales fell 6.1 percent, with the average price down 6.6 percent to $191,967 and the median price unchanged at $159,450;Leases of single-family homes dropped 35.4 percent with the average rent down 4.0 percent to $1,812;Volume of townhome/condominium leases plunged 44.5 percent with the average rent down 1.0 percent to $1,584.https://www.har.com/content/newsroom?

This creates an opportunity for the legit STR owners to possibly pick up another STR property at a distressed sale price. 

You don't get to stay in the house after it sales at auction.

Also, be careful about transferring the title to an LLC while you have a conventional residential mortgage, as there are lots of discussions about that and the due on sale clause.